global warming

LANZHOU, CHINA -- Burning fossil fuels is the largest contributor to the declining level of oxygen in the atmosphere, according...

WASHINGTON -- Researchers from Oregon State University found that a "flushing" of the deep Pacific Ocean made more carbon dioxide...

WASHINGTON -- A study published on Monday in the journal Proceedings of the National Academy of Sciences suggested that keeping...

WASHINGTON -- Chinese and American researchers found that increasing precipitation, a symptom of climate change, made it harder for forest...